Mold-form clamp



March 11, 1930. KISHPAUGH 1,750,525

MOLD FORM CLAMP Filed March 5, 1928 INVENTQR. H. m. KISHF'HU EHATTORNEYS.

Patented Mar. 11, 1930 UNITED STATES HAMPTON M. KISHPAUGI-I, FCOURTLAND, CALIFORNIA MOLD-FORM CLAMP Application filed March 5,

This invention relates to improvements in mold form clamps.

The principal object of this invention is to produce a clamp for holdingmetal forms such as are employed in the constructing of concrete wallsand the like structures.

Another object is to produce a clamp which will effectively hold themolds in adjusted position.

Another object is to produce a device which is simple to operate andtherefore one which may be used by an unskilled laborer.

A further object is to produce a clamp which may be adjusted toaccommodate for varying building conditions.

A still further object is to produce a clamp which is simple inconstruction and therefore economical to manufacture.

Other objects and advantages will be apparent during the course of thefollowing description.

In the accompanying drawings forming a part of this specification and inwhich like numerals are employed to designate like parts throughout thesame, 7

Figure 1 is an end elevation of my clamp as the same would appear whensecured to standard mold forms,

Figure 2 is a vertical cross section showing the inner face of the clampas viewed from the opposite side of Figure 1,

Figure 3 is a fragmentary top plan View of Figure 1,

Figure 4: is an enlarged fragmentary detail view of the operating lever,and

Figure 5 is a top plan view of Figure 4:.

In the forming of concrete structures such as walls, a plurality of moldsections are employed, which mold sections are clamped into position sothat concrete may be poured therebetween. In some instances these moldsrest directly upon the ground and in some other instances aresuperimposed upon their partly constructed wall. Heretofore many meanshave been employed for the securing of these mold sections such as woodand frame work, in combination with braces and wedges and the likeclamping means. Such means for maintaining the mold within properposition are cumbersome, expensive and require a 1928. Serial No.259,243.

large amount of labor which is a costly item when a building must bemade at the least possible cost.

In the accompanying drawings wherein for the purpose of illustration isshown a pre ferred embodiment of my invention, the numerals 5 and 6refer to clamp sections. The clamp section 5 has an elongated downwardlyextending leg 7 and a short downwardly extending leg 8. The clamp 6 islikewise provided with an elongated downwardly extending leg 9 and ashort leg 11.

It is to be understood that there are two of these clamp sections spacedat the opposite ends of the mold sections, designated by the numerals12, 13, 14 and 16. These mold sections may carry face plates if desired.The short downwardly extending legs 8 and 11 are each provided with asupplemental leg as shown at 17 and 18 respectively. The upper ends ofthese supplemental legs are bifurcated and held in place by wing nuts asshown at 19 and 21 respectively.

Lugs 22 are welded or otherwise secured to the downwardly extending legs8 and 11 so as to prevent the supplemental legs 17 and 18 turning upontheir securing means. The clamp sections 5 and 6 are each provided witha row of openings 23 therethrough through which a pivot bolt 24L may bepassed. The clamp member 6 is further provided with a row of openings 26while the clamp member 5 has an elongated slot 27 formed therein. Thisslot serves to accommodate an eccentric cam 28 secured by a screw 29 toone end of the operating handle 31.

Formed on the cam 28 is a lug 32 which is adapted to enter one of theopenings 26 of the clamp member 6. The operating handle 31 is preferablyU-shaped, the two ends of the handle being connected by a portion 33.The result of this construction is that when two complete clamp sectionsare attached to the mold sections and an operating handle connected bythe two clamps, the action will be as follows 7 When the parts are inthe position shown in Figures 1, 2 and 3, the mold sections will havetheir faces in parallel alignment at which time concrete or any otherplastic substance may be poured therebetween and after the same has seta SLlflIlClBIlt time to harden, by raising upon the operating handle 33the cams 28 will be caused to rotate about the lugs 32 which will pivotin the openings 26 in which they are positioned with the result that oneclamp section will pivot with respect to the other clamp section towhich it is pivotally connected as by the pivot bolts 24. This pivotalaction will result in the outer forms 12 and 16 moving away from eachother as designated in dotted lines of Figure 2 and at the same time themold sections 13 and 14 will move towards each other. Assuming that ahollow wall or block is being constructed it is obvious that by movingthe outer molds away from each other and the inner molds towards eachother that the molds may then be withdrawn from the material thus cast.

It is also obvious that the mold sections 13 1 serting the lugs in thevarious openings 26.

It will thus be seen that my clamp will function in the manner abovedescribed and will perform all of the objects above set forth.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same and thatvarious changes relative to the material size, shape and arrangement ofparts may be resorted to without departing from the spirit of theinvention or the scope of the subjoined claim.

Having thus described my invention, I claim In a clamp of the characterdescribed, a pair of overlapping clamp members, each of said clampmembers having an integral outer leg and a detachable inner leg, saiddetachable inner legs being so positioned that they will lie between theintegral outer leg and inner detachable leg of the opposite clampingmember, means for pivoting said clamping members to each other, meansfor rotating said clamping members on their pivotal connection forholding said legs in parallel position, said last mentioned meansincluding an operating handle, a cam positioned on said operatinghandle, said cam being adapted to pivot on one of said clamping membersandto engage in a slot in the opposite of said clamping members for thepurpose specified.

In testimony whereof I affix my signature.

HAMPTON M. KISHPAUGH.

